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Description
Alignment is a critical issue in laser acceleration techniques. A laser-target system is usually mechanically prealigned and further alignment optimizations are performed by optical methods (use of a test beam, CCD viewing cameras and so on). However, these methods are generally used successfully in low power laser regime. As laser power increases, most existing alignment techniques become inefficient both due to nonlinear behavior occurring in certain physical phenomena and due to electromagnetic pulses (EMPs) produced by the laser-matter interaction, which can cause equipment malfunctions.
Present work proposes a method of alignment in high-power system regime, based on EMP parasitic emissions and presents some results obtained in CETAL-PW laser system.
